keyword
https://read.qxmd.com/read/38507908/chain-of-events-analysis-in-diving-accidents-treated-by-the-royal-netherlands-navy-1966-2023
#1
JOURNAL ARTICLE
Benjamin L Turner, Pieter-Jan Am van Ooij, Thijs T Wingelaar, Rob A van Hulst, Edwin L Endert, Paul Clarijs, Rigo Hoencamp
INTRODUCTION: Diving injuries are influenced by a multitude of factors. Literature analysing the full chain of events in diving accidents influencing the occurrence of diving injuries is limited. A previously published 'chain of events analysis' (CEA) framework consists of five steps that may sequentially lead to a diving fatality. This study applied four of these steps to predominately non-lethal diving injuries and aims to determine the causes of diving injuries sustained by divers treated by the Diving Medical Centre of the Royal Netherlands Navy...
March 31, 2024: Diving and Hyperbaric Medicine: the Journal of the South Pacific Underwater Medicine Society
https://read.qxmd.com/read/38504776/occupational-decompression-sickness-a-case-report
#2
Taylor Diederich, Allyson M Briggs, Adrienne Malik, Bryan Beaver
Decompression sickness describes the clinical pathology that ensues when rapid decompression from a highly pressurized environment causes the formation of venous and extravascular inert gas bubbles. Symptoms vary widely, commonly including arthralgias, myalgias, paresthesias, and numbness. Severe and potentially life-threatening pathology, such as neurologic impairment, cardiopulmonary instability, and gastrointestinal hemorrhage, can occur as well. Most think of diving endeavors as a common exposure predisposing to this condition, commonly referred to as "the bends...
April 2024: Journal of the American College of Emergency Physicians open
https://read.qxmd.com/read/38470517/decompression-sickness-of-the-inner-ear-and-relationship-with-a-patent-oval-foramen-a-study-of-61-cases
#3
JOURNAL ARTICLE
Raphaële Quatre, Bertrand Delafosse, Sébastien Schmerber, Edouard Soriano
OBJECTIVE: To discuss the link between inner ear decompression sickness and patent foramen ovale. MATERIALS AND METHODS: Monocentric and retrospective study on decompression sickness of the inner ear requiring hyperbaric chamber treatment, from 2014 to 2021. RESULTS: Sixty-one patients of inner ear decompression sickness were included in this study. Twenty-four patients had vestibular injuries, 28 cochlear injuries and 9 cochleo-vestibular injuries...
March 12, 2024: European Archives of Oto-rhino-laryngology
https://read.qxmd.com/read/38420678/a-novel-method-for-tracking-hyperbaric-nitrogen-kinetics-in-vivo-using-radioactive-nitrogen-13-gas-and-positron-emission-tomography
#4
JOURNAL ARTICLE
Edward T Ashworth, Ryotaro Ogawa, Juliana Nguyen, Chloe Afif, Rui C Sá, Kim Butts Pauly, David R Vera, Peter Lindholm
Decompression sickness (DCS) is caused by gaseous nitrogen dissolved in tissues forming bubbles during decompression. To date no method exists to identify nitrogen within tissues, but with advances in PET technology it may be possible to track gaseous radionuclides into tissues. We aimed to develop a method to track nitrogen movement in vivo that could then be used to further our understanding of DCS using nitrogen-13 (13 N2 ). A single anesthetized female Sprague Dawley rat, was exposed to 625 kPa, composed of air, isoflurane and 13 N2 for 10 min...
February 29, 2024: Journal of Applied Physiology
https://read.qxmd.com/read/38380313/corrigendum-iatrogenic-air-embolism-pathoanatomy-thromboinflammation-endotheliopathy-and-therapies
#5
Phillip L Marsh, Ernest E Moore, Hunter B Moore, Connor M Bunch, Michael Aboukhaled, Shaun M Condon, Mahmoud D Al-Fadhl, Samuel J Thomas, John R Larson, Charles W Bower, Craig B Miller, Michelle L Pearson, Christopher L Twilling, David W Reser, George S Kim, Brittany M Troyer, Doyle Yeager, Scott G Thomas, Daniel P Srikureja, Shivani S Patel, Sofía L Añón, Anthony V Thomas, Joseph B Miller, David E Van Ryn, Saagar V Pamulapati, Devin Zimmerman, Byars Wells, Peter L Martin, Christopher W Seder, John G Aversa, Ryan B Greene, Robert J March, Hau C Kwaan, Daniel H Fulkerson, Stefani A Vande Lune, Tom E Mollnes, Erik W Nielsen, Benjamin S Storm, Mark M Walsh
[This corrects the article DOI: 10.3389/fimmu.2023.1230049.].
2024: Frontiers in Immunology
https://read.qxmd.com/read/38344218/the-new-insights-of-hyperbaric-oxygen-therapy-focus-on-inflammatory-bowel-disease
#6
REVIEW
Leilei Chen, Yan Wang, Huihui Zhou, Yi Liang, Fengqin Zhu, Guangxi Zhou
Inflammatory bowel diseases (IBD), with an increasing incidence, pose a significant health burden. Although there have been significant advances in the treatment of IBD, more progress is still needed. Hyperbaric oxygen therapy (HBOT) has been shown to treat a host of conditions such as carbon monoxide poisoning, decompression sickness, and gas gangrene. In the last few years, there has been an increase in research into the use of HBOT as an adjunct to conventional treatment for IBD. Related research has shown that HBOT may exert its therapeutic effects by decreasing oxidative stress, inhibiting mucosal inflammation, promoting ulcer healing, influencing gut microbes, and reducing the incidence of IBD complications...
March 2024: Precision Clinical Medicine
https://read.qxmd.com/read/38284795/the-laryngologist-who-saved-the-brooklyn-bridge
#7
REVIEW
Glenn Isaacson
OBJECTIVE: To understand the role of a single laryngologist, Andrew Heermance Smith, in elucidating the mechanisms of Caisson Disease and controlling it effects on bridge workers. DATA SOURCES: Scientific and lay publications, letters and records of the Roebling family, obituaries and internet sources. REVIEW METHODS: Historical review. RESULTS: AH Smith combined physiological observations and experiments in the Brooklyn Bridge caissons with a review of the existing engineering and medical literature to describe the Caisson Disease and to devise strategies to ameliorate its effects...
January 29, 2024: Laryngoscope
https://read.qxmd.com/read/38252649/effects-of-oxygen-prebreathing-on-tissue-nitrogenation-in-normobaric-and-hyperbaric-conditions
#8
JOURNAL ARTICLE
Edward Tom Ashworth, Ryotaro Ogawa, David Robert Vera, Peter Lindholm
BACKGROUND: Breathing pure oxygen causes nitrogen washout from tissues, a method commonly deployed to prevent decompression sickness from hypobaric exposure. Theoretically prebreathing oxygen increases the capacity for nitrogen uptake and potentially limits supersaturation during dives of short duration. We aimed to use 13N2, a radioactive nitrogen isotope, to quantify tissue nitrogen following normobaric and hyperbaric exposures. METHODS: Twenty Sprague Dawley rats were divided in 4 conditions; normobaric prebreathe, normobaric control, hyperbaric prebreathe, hyperbaric control...
2024: PloS One
https://read.qxmd.com/read/38241951/management-of-patent-foramen-ovale-findings-from-a-nationwide-survey
#9
JOURNAL ARTICLE
Anastasios Apostolos, Maria Drakopoulou, Georgios Trantalis, Michael Ioakeimidis, Eleni Koroboki, Sotirios Tsalamandris, Constantina Aggeli, Georgios Ntaios, Costas Tsioufis, Georgios Tsivgoulis, Konstantinos Toutouzas
OBJECTIVES: Several clinical trials have provided evidence supporting the transcatheter closure of patent foramen ovale (PFO) in selected patients following a cryptogenic stroke. However, it remains unknown to what extent these guidelines have been implemented in everyday clinical practice and the familiarity of physicians from different specialties with PFO closure. The aim of our nationwide survey is to explore the implementation of transcatheter PFO occlusion in Greek clinical practice...
March 2024: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://read.qxmd.com/read/38202061/patent-foramen-ovale-percutaneous-closure-evolution-and-ongoing-challenges
#10
REVIEW
Perrine Devos, Paul Guedeney, Gilles Montalescot
Patent foramen ovale (PFO) concerns nearly a quarter of the general population and incidence may reach up to 50% in patients with cryptogenic stroke. Recent randomized clinical trials confirmed that percutaneous closure of PFO-related stroke reduces the risk of embolic event recurrence. PFO also comes into play in other pathogenic conditions, such as migraine, decompression sickness or platypnea-orthodeoxia syndrome, where the heterogeneity of patients is high and evidence for closure is less well-documented...
December 21, 2023: Journal of Clinical Medicine
https://read.qxmd.com/read/38091593/within-diver-variability-in-venous-gas-emboli-vge-following-repeated-dives
#11
JOURNAL ARTICLE
David J Doolette, F Gregory Murphy
INTRODUCTION: Venous gas emboli (VGE) are widely used as a surrogate endpoint instead of decompression sickness (DCS) in studies of decompression procedures. Peak post-dive VGE grades vary widely following repeated identical dives but little is known about how much of the variability in VGE grades is proportioned between-diver and within-diver. METHODS: A retrospective analysis of 834 man-dives on six dive profiles with post-dive VGE measurements was conducted under controlled laboratory conditions...
December 20, 2023: Diving and Hyperbaric Medicine: the Journal of the South Pacific Underwater Medicine Society
https://read.qxmd.com/read/38091591/measuring-whole-body-inert-gas-wash-out
#12
JOURNAL ARTICLE
Oscar Plogmark, Mårten Silvanius, Max Olsson, Carl Hjelte, Magnus Ekström, Oskar Frånberg
INTRODUCTION: Quantifying inert gas wash-out is crucial to understanding the pathophysiology of decompression sickness. In this study, we developed a portable closed-circuit device for measuring inert gas wash-out and validated its precision and accuracy both with and without human subjects. METHODS: We developed an exhalate monitor with sensors for volume, temperature, water vapor and oxygen. Inert gas volume was extrapolated from these inputs using the ideal gas law...
December 20, 2023: Diving and Hyperbaric Medicine: the Journal of the South Pacific Underwater Medicine Society
https://read.qxmd.com/read/38091588/risk-assessment-of-swen21-a-suggested-new-dive-table-for-the-swedish-armed-forces-bubble-grades-by-ultrasonography
#13
JOURNAL ARTICLE
Carl Hjelte, Oscar Plogmark, Mårten Silvanius, Magnus Ekström, Oskar Frånberg
INTRODUCTION: To develop the diving capacity in the Swedish armed forces the current air decompression tables are under revision. A new decompression table named SWEN21 has been created to have a projected risk level of 1% for decompression sickness (DCS) at the no stop limits. The aim of this study was to evaluate the safety of SWEN21 through the measurement of venous gas emboli (VGE) in a dive series. METHODS: A total 154 dives were conducted by 47 divers in a hyperbaric wet chamber...
December 20, 2023: Diving and Hyperbaric Medicine: the Journal of the South Pacific Underwater Medicine Society
https://read.qxmd.com/read/38085418/utility-of-ultrasound-in-managing-acute-medical-conditions-in-space-a-scoping-review
#14
REVIEW
Asachi Parsa, Ghanem Ghadi, Burton Jason, Aintablian Haig, Chiem Alan
BACKGROUND: In long-distance spaceflight, the challenges of communication delays and the impracticality of rapid evacuation necessitate the management of medical emergencies by onboard physicians. Consequently, these physicians must be proficient in tools, such as ultrasound, which has proven itself a strong diagnostic imaging tool in space. Yet, there remains a notable gap in the discourse surrounding its efficacy in handling acute medical scenarios. This scoping review aims to present an updated analysis of the evidence supporting the role of ultrasound in diagnosing acute conditions within microgravity environments...
December 12, 2023: The ultrasound journal
https://read.qxmd.com/read/38055878/hyperbaric-treatment-deviations-for-u-s-navy-divers-spinal-dcs
#15
JOURNAL ARTICLE
John DeMis, Brian Michael Keuski, April Due
INTRODUCTION: The United States Navy (USN) developed and refined standardized oxygen treatment tables for diving injuries, but USN tables may not address all situations of spinal decompression sickness (DCS). We describe a detailed recompression treatment regimen that deviated from standard USN protocol for an active-duty USN diver with a severe, delayed presentation of spinal cord DCS. CASE REPORT: A USN diver surfaced from his second of three dives on a standard Navy 'no-Decompression' Air SCUBA dive (Max depth 101 fsw utilizing a Navy Dive Computer) and developed mid-thoracic back pain, intense nausea, paresthesias of bilateral feet, and penile erection...
2023: Undersea & Hyperbaric Medicine: Journal of the Undersea and Hyperbaric Medical Society, Inc
https://read.qxmd.com/read/38055877/bubble-rupture-viability-of-red-blood-cells-under-resonant-acoustic-standing-waves
#16
JOURNAL ARTICLE
Edwin López Ramos, Manuel Rivera Bengoechea, Silvina Cancelos Mancini, Carlos Marín Martín
OBJECTIVE: The presentation of a novel prospective treatment for scenarios where bubble presence in the bloodstream poses a clinical risk. The method relies on generating resonant acoustic standing waves within a limb to non-invasively accelerate the dissolution of bubbles present in the bloodstream via bubble rupture. Additionally, a preliminary assessment of the effects of the resonant acoustic waves and bubble rupture events on red blood cell viability is provided. METHODS: Two semicircular piezoelectric (PZT) transducers electrically connected to each other were assembled around a small-girth segment of a rear thigh removed from a swine specimen...
2023: Undersea & Hyperbaric Medicine: Journal of the Undersea and Hyperbaric Medical Society, Inc
https://read.qxmd.com/read/37980852/histological-and-cytochemical-analysis-of-the-brain-under-conditions-of-hypobaric-hypoxia-induced-oxygen-deficiency-in-albino-rats
#17
JOURNAL ARTICLE
Ruzanna Shushanyan, Anna Grigoryan, Tamara Abgaryan, Anna Karapetyan
High altitude sickness is a life-threatening disease that occurs among acclimatized individuals working or living at a high altitude accompanied by hypobaric hypoxia exposure. The prolonged influence of hypobaric hypoxia on the brain may trigger neuronal damage and cell death due to an oxygen deficiency. The purpose of the current study was to investigate the histomorphological changes in the hippocampus, cerebral cortex, cerebellar cortex, and striatum of the rat's brain following chronic hypobaric hypoxia...
December 2023: Acta Histochemica
https://read.qxmd.com/read/37937365/a-support-vector-machine-based-cure-rate-model-for-interval-censored-data
#18
JOURNAL ARTICLE
Suvra Pal, Yingwei Peng, Wisdom Aselisewine, Sandip Barui
The mixture cure rate model is the most commonly used cure rate model in the literature. In the context of mixture cure rate model, the standard approach to model the effect of covariates on the cured or uncured probability is to use a logistic function. This readily implies that the boundary classifying the cured and uncured subjects is linear. In this article, we propose a new mixture cure rate model based on interval censored data that uses the support vector machine to model the effect of covariates on the uncured or the cured probability (i...
November 8, 2023: Statistical Methods in Medical Research
https://read.qxmd.com/read/37904988/dissolved-gases-from-pressure-changes-in-the-lungs-elicit-an-immune-response-in-human-peripheral-blood
#19
Abigail G Harrell, Stephen R Thom, C Wyatt Shields
UNLABELLED: Conventional dogma suggests that decompression sickness (DCS) is caused by nitrogen bubble nucleation in the blood vessels and/or tissues; however, the abundance of bubbles does not correlate with DCS severity. Since immune cells respond to chemical and environmental cues, we hypothesized that the elevated partial pressures of dissolved gases drive aberrant immune cell phenotypes in the alveolar vasculature. To test this hypothesis, we measured immune responses within human lung-on-a-chip devices established with primary alveolar cells and microvascular cells...
October 21, 2023: bioRxiv
https://read.qxmd.com/read/37878799/a-15-year-longitudinal-study-of%C3%A2-body-composition-in%C3%A2-finnish-military-divers
#20
JOURNAL ARTICLE
Richard V Lundell, Ray Saarelainen, Kai I Parkkola, Tomi K Wuorimaa
INTRODUCTION: Finnish military divers perform a great variety of tasks all year round, all of which require good physical health and fitness. Poor physical fitness can hinder the ability to cope with different situations. A high body fat percentage has been suggested to increase the risk of decompression sickness, whereas low muscle mass has been associated with an increased risk of musculoskeletal disorders and trauma. However, a low-fat composition may render divers vulnerable to cold and hypothermia during a dive in cold Arctic conditions...
October 25, 2023: Military Medicine
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